Moira was born in Dunfermline, Scotland, to Harold Charles King, a civil engineer, who played a significant role in shaping her early life. She received her primary education at Dunfermline High School, where she laid the foundation for her future endeavors. Her academic journey continued at Ndola in Zambia (formerly Northern Rhodesia),where she attended Bearsden Academy, Scotland, to further her education.
Moira's passion for dance led her to receive professional training at the prestigious Mayfair School and The Nicholas Legat Studio. Her hard work and dedication paid off when she made her debut in the International Ballet in 1941, followed by a successful performance at Sadler's Wells in 1942. From 1942 to 1952, she danced a wide range of classic roles and revivals, showcasing her impressive skill and versatility as a ballerina.
Her first role as prima ballerina was a significant milestone in her career, as she took on the iconic role of "Sleeping Beauty" at the Royal Opera House, Covent Garden in 1946. This was followed by performances in "Coppelia" and "Swan Lake", solidifying her position as a leading ballerina. Moira's talent and dedication earned her the opportunity to tour the United States with the Sadler's Wells Ballet in 1949 and 1950/51.
In addition to her successful career as a ballerina, Moira also explored her passion for acting. She took on the role of Sally Bowles in "I Am a Camera" in 1955 and appeared in "Major Barbara" at the Bristol Old Vic in 1956. Although these performances marked the beginning of her secondary career as an actress, she continued to perform as a ballerina, appearing on TV in both capacities.
Throughout her illustrious career, Moira has demonstrated her remarkable talent, versatility, and dedication to her craft. Her achievements as a ballerina and actress have left a lasting impact on the world of performing arts, and her legacy continues to inspire future generations of artists.